Model: Samsung SSD 850 EVO M.2 250GB Solid State Drive
Manufacturer: Samsung Electronics
Provided By: Samsung America

Samsung Electronics has been a leader in the electronics industry for more than 30 years. Since the introduction of their first television in 1970, this Korean company has grown to become one of the world's leading electronics manufacturers, offering everything from tiny semiconductors to large home appliances. Samsung is no stranger to the storage industry either. Along with an assortment of DVD and Blu-ray Disc drives, the company offers both hard drive and flash based storage solutions for the portable and desktop computer markets.


Like many other manufacturers, Samsung has set its sights on the growing solid-state drive (SSD) market. Last fall, the company launched its first 3-bit 3D V-NAND based SSD, the 850 EVO. Optimized for everyday computing, the 850 EVO was powered by one of two different controllers. While the 1TB drive was equipped with the same MEX controller found in the 840 EVO and 850 PRO, lower capacity versions got Samsung's new MGX controller. To compensate for the slow write speeds typically associated with 3-bit (TLC) NAND, the 850 EVO used Samsung's TurboWrite write acceleration technology, which created a high-performance write buffer in the SSD. The result is an reasonably priced, consumer-oriented drive that delivers performance much like that of its higher-end sibling, the 850 PRO.

Samsung has now launched the 850 EVO M.2. Designed for Ultrabooks, ultra-thin computing devices and motherboards with built-in M.2 (NGFF) slots, this new addition to the 850 EVO family isn't much larger than a stick of chewing gum. The 850 EVO M.2 is powered by the same MGX controller found in the 850 EVO and is available with up to 500GB of Samsung's 3-bit 3D V-NAND flash memory. The drive also shares many of the same features as its full size counterpart. Along with Turbo Write, it supports Device Sleep (DEVSLP) for lower power consumption and self-encrypting drive (SED) technology that is TCG Opal 2.0 and IEEE-1667 compliant. Moreover, the 850 EVO M.2 supports Samsung's RAPID (Real-time Accelerated Processing of I/O Data) technology. By using free PC memory as a cache, RAPID can push the performance of the SSD beyond the limits of the current SATA specification.

The 850 EVO M.2 is available in 120GB, 250GB and 500GB capacities. For this review, Samsung sent us the 250GB version of the drive which comes equipped with 512MB of on-board cache and is capable of delivering up to 540 MB/s sequential read and 520 MB/s sequential write speeds as well as up to 95,000 random read and 89,000 random write IOPS.

   Samsung SSD 850 EVO M.2 250GB Solid State Drive
General Specifications
Model Number MZ-N5E250BW
Capacity 250GB
Flash Type Samsung Samsung 32 layer 3D V-NAND 3-bit MLC
Controller Samsung MGX S4LN062X01-Y030
Form Factor M.2 2280
Interface SATA III 6Gb/s

Sequential Read 540 MB/s Max
Sequential Write 520 MB/s Max
4K Random Read (QD1) 10,000 IOPS
4K Random Write (QD1) 40,000 IOPS
4K Random Read (QD32) 95,000 IOPS
4K Random Write (QD32) 89,000 IOPS

MTBF 1.5 million hours
Endurance 75TBW

Power Consumption
Average 2.2 Watt
Maximum 3.3 Watt
Idle 50 mW
Device Sleep 2 mW

Temperature (Operating) 0 ºC to 70 ºC
Temperature (Non-Operating) -40 ºC to 85 ºC
Humidity 5% to 95%, non-condensing
Shock 1500G & 0.5ms (Half sine)
Vibration (Non-operating) 20~2000Hz, 20G

Dimensions and Weight
Dimensions 80.15 x 22.15 x 2.38 mm
Weight 6.8 g

Other Features
Supports TurboWrite and RAPID technologies
AES 256-bit full disk encryption
TCG Opal and eDrive IEEE 1667 standards compliant
Supports TRIM, SMART and Garbage Collection
DEVSLP power mode
3 year warranty

Needless to say, this is only a taste of what the 850 EVO M.2 has to offer. To give you an idea of what to expect, we'll take a closer look at Samsung's new M.2 SSD and then see how well it performs. Does the 850 EVO M.2 have what it takes? Can it deliver the performance and features that we've come to expect from Samsung? Keep reading as we find out.

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